diff --git a/etc/psa_tariff/tariff04.json b/etc/psa_tariff/tariff04.json
index 54a7a58..d4d4bdb 100644
--- a/etc/psa_tariff/tariff04.json
+++ b/etc/psa_tariff/tariff04.json
@@ -920,9 +920,9 @@
     },
     {
       "ped_id": 16,
-      "ped_label": "Christmas 3rd day",
-      "ped_date_start": "",
-      "ped_date_end": "",
+      "ped_label": "Labour Day",
+      "ped_date_start": "2026-05-02",
+      "ped_date_end": "2026-05-02",
       "ped_period_special_day_id": 2,
       "ped_year": 0
     },
diff --git a/etc/psa_tariff/tariff06.json b/etc/psa_tariff/tariff06.json
index 20b86e8..838297b 100644
--- a/etc/psa_tariff/tariff06.json
+++ b/etc/psa_tariff/tariff06.json
@@ -920,9 +920,9 @@
     },
     {
       "ped_id": 16,
-      "ped_label": "Christmas 3rd day",
-      "ped_date_start": "",
-      "ped_date_end": "",
+      "ped_label": "Labour Day",
+      "ped_date_start": "2026-05-02",
+      "ped_date_end": "2026-05-02",
       "ped_period_special_day_id": 2,
       "ped_year": 0
     },